Questions tagged [bitcoin-core]

This tag should be used for questions pertaining to Bitcoin Core. Bitcoin Core is an MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client". This tag should be used when referring to the Bitcoin Core software.

528 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1
vote
0answers
46 views

two functions Bitcoin has which are absent from Litecoin: `MakeTransactionRef()` and `std::move()`

From the file chainparams.cpp... Litecoin: genesis.vtx.push_back(txNew); Bitcoin: genesis.vtx.push_back(MakeTransactionRef(std::move(txNew))); What is this function MakeTransactionRef()? What is ...
1
vote
0answers
146 views

Orphaned blocks

Is there orphaned blocks in blockchain? I mean a database of full node. Is it true that orphaned blocks (that outside the mainchain) already are in blk00*.dat files?
1
vote
0answers
53 views

MultiBitHD gap limit multiple devices

A technical question on MBHD gap limit. Afaic the gap limit (GL) is to warn a user to not create a too large gap between the last actively used address and newly (unused) addresses. Now, suppose I'm ...
1
vote
0answers
73 views

Bitcoin Full Node Stalled - 13.2

A full node that I've had running for months just began to stall on a certain block. It seems to be refusing to update blocks beyond a certain timeframe. There are no processes spinning, network ...
1
vote
0answers
411 views

Bitcoins disappeared on import into Electrum

A few years ago I received some bitcoin in Bitcoin Core (~0.4 BTC). Then I transferred some to Kraken (~0.1 BTC) and a few weeks later transferred some back (~0.1 BTC). Then I backed up wallet.dat and ...
1
vote
0answers
41 views

Wallet issues with bitcoin

i am new to this bitcoin universe and signed up on a website called genesis mining, a form of cloud mining. it asked for my bitcoin wallet address but can't find it no where in the bitcoin wallet app ...
1
vote
0answers
324 views

how to change address back to old address

i set up bitcoin core wallet and had an address. I had someone pay me into this wallet. unfortunately, my mobile crashed and when I re-installed - i got a new address and lost my bitcoins on the old ...
1
vote
0answers
1k views

How to uninstall Bitcoin Core?

I would like to know if you could help me, I downloaded the wallet of BITCOIN CORE and it occupied 25GB and filled my SSD i did not know that it takes more than 60GB, can you help me to uninstall the ...
1
vote
0answers
2k views

socket recv error Connection reset by peer (54) failed after select(): Connection refused (61)

No block source available I have: nmap -Pn 84.236.43.229 For each of the addresses in question none of them have had port 8333 open, I have also tried testing from outside my current network, and ...
1
vote
0answers
246 views

Bitcoin Core QT Fatal Error after moving block folder, can't retrieve Private Key

I have tried installing Bitcoin Core on my PC and without thinking, I went on and bought some coins (I was trying to be organized, so by the time the sync was done I would already have the coin). 90% ...
1
vote
0answers
40 views

Bitcoin transactions.

So recently, I had some bitcoins transferred to my desktop wallet account. The transfer happened yesterday. The way I did it, was that I created an address as you all know, without label or specific ...
1
vote
0answers
104 views

bitcoin-qt (master branch) shutdown delay on debian stretch

Following a bitcoin core issue on debian stretch which was resolved on the master branch, I am now running a pre-release test build. Each time I exit bitcoin-qt, I have to wait about 5 minutes until ...
1
vote
0answers
2k views

v0.13.1 wallet - connect failed: Network is unreachable (101)

Noob here. Ran the core wallet on my Linux PC and looking for help as to why it is not working after syncing up the history of blockchain Tx's. Is this likely my router not passing port 8333 packets,...
1
vote
0answers
281 views

Bitcoin-qt requesting reindex on already indexed blockchain data directory

To save time, I synced the blockchain on my laptop for import to my Raspberry Pi node. I had set txindex=1. When setting txindex=1 on my Raspberry Pi and pointing the data directory to my previously ...
1
vote
0answers
536 views

Failing to build bitcoin-core v0.13.1

I have done quite a few upgrades in the past and this has never happened before: $ uname -a Linux back 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux $ git checkout v0....
1
vote
0answers
386 views

Why doesn't bitcoind verify blocks like bitcoin qt?

I have downloaded the full bitcoin blockchain using bitcoin-qt. When I run bitcoin-qt, it verifies the blocks for about a minute, then it runs without any issues. The issue is when I try to run ...
1
vote
0answers
83 views

C++ Proofofworklimit to bitcoinj util.DecodeCompactBits

What is equivalent bitcoinj util.DecodeCompactBits for below c++. Cbignum(~uint256(0) >>32) Cbignum(~uint256(0) >>20) Cbignum(~uint256(0) >>23) Cbignum(~uint256(0) >>22)
1
vote
0answers
46 views

C Compilation Error Following README

I'm having an issue getting the local bitcoin client running on a Mac OS X machine. When installing berkeley-db4, and running the following command (per the README): brew install https://raw.github....
1
vote
0answers
90 views

What is the correct code flow while sending a message

I have a fundamental doubt wrt boost signaling used in bitcoin. As far as I understand the following happens between main.cpp and init.cpp: StartNode() spawns a thread ThreadMessageHandler ...
1
vote
0answers
54 views

Help with understanding Semaphore grants in OpenNetworkConnection

I am new to concurrent programming. Can any expert throw some light on the semaphore grant that one requires before acquiring a network connection ? bool OpenNetworkConnection(const CAddress& ...
1
vote
0answers
190 views

Can't handshake with my node

I have a 0.11 nodes, all was fine until now, no restart is doing anything. My client sends a Version Handshake but the ACK never comes. In RPC getpeerinfo take 1 or 2 minutes to process even if there ...
1
vote
0answers
58 views

Where does the current Bitcoin Core currently fail static analysis, if at all?

I am looking into static analysis, and I'd like to know what to expect in the case of Bitcoin's main implementation, Bitcoin-Core. That way, if I try static analysis on Bitcoin, I will know whether ...
1
vote
0answers
691 views

OS Windows Reinstalled, Bitcoin Core bitcoins lost, how do I recover them?

I've lost my bitcoins when I reinstalled OS on my computer. I still have my receiving address and the password I used to encrypt my Bitcoin Core Wallet. How do I recover the lost bitcoins? Does ...
1
vote
0answers
191 views

bitcoin-qt restored wallet.dat all synced closes after correct passphrase “assertion error crypt” HELP

Installed bitcoin-qt and replaced new wallet.dat with old wallet.dat backup Opened bitcoin-qt and let it sync and all blocks synced and wallet has correct funds and past transactions. I Want to ...
1
vote
0answers
74 views

Bitcoind writes complete wallet.dat regularly which is a problem, what can i do?

i have troubles with my system, using iotop i identified bitcoind as the source of problems. I am running bitcoind of bitcoin-0.10.0-linux32 and am using the RPC calls of bitcoind. My wallet file is ...
1
vote
0answers
646 views

Mempool tracking

I'm trying to clear up some uncertainties around the mempool A tx comes in, its validated, and no other transactions have currently marked any of its inputs. Tx gets added to mempool. If a double ...
1
vote
0answers
609 views

Error While making windows.exe using gitian build?

Actually I'm making a logos windows exe (logosd and logos-qt) following the release process, which is mention on below path on any coin you can find that path, I'm working logos LGS Coin that's why I'...
1
vote
0answers
72 views

listsinceblock returning block on fork

Im considering using listinceblock to monitor incoming bitcoins to my app. What happens if the block returned by listsinceblock ends up being on a dead-end fork?
1
vote
0answers
238 views

How I make a portable version of Bitcoin for Ubuntu?

I want to create a bitcoin wallet executable file in Ubuntu with all its dependencies. So when use that file from some other system it will work perfectly. How I make a portable version of Bitcoin ...
1
vote
0answers
2k views

Problem with Berkeley DB while building Bitcoin on Windows from Source Code?

I'm trying to compile Bitcoin from source code in Windows 7. When I run ./configure, I get the following error: checking for Berkeley DB C++ headers... no configure: error: libdb_cxx headers missing ...
1
vote
0answers
200 views

bfgminer on bitcoin-qt

I am getting this error and looking for guidance. Error : Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers config server=1 rpcallowip=192.168.1.0/24 ...
1
vote
0answers
1k views

Gitian Build Issue - Windows

Got a little issue when compiling Windows QT using Gitian. BTW Im using a Ubuntu 12.04 64bit VPS. So I am using the instructions here : https://cryptocointalk.com/topic/2966-bitcoin-scrypt-v120-...
1
vote
0answers
995 views

creating our own coin - connection refused error

We are trying to create our own currency. We first started with testnet. The aim is to generate a genesis block and testnet did it very well. However, although we had connection between two ...
1
vote
0answers
176 views

Bitcoin.conf connect command

When configuring the bitcoin.conf file, what should you put in connect=? There are IP addresses listed here, so I removed the # sign and left them as is. I also entered my WAN address and my local ...
1
vote
0answers
119 views

Submitted blocks get rejected on Litecoin testnet

I'm trying to submit blocks to the Litecoin Testnet, however everything gets rejected. I got my raw value as ...
1
vote
0answers
211 views

how to run bitcoind server on a ubuntu 13.04 server

I am trying to host a bitcoind on my server so I can connect to it on my website, how do I install it, run it, update the conf file? this is on a server not a desktop
1
vote
0answers
105 views

Bitcoin Qt message signature construction

I'm trying to construct the message verification signature of bitcoin qt in python. I'm able to compute the couple (r,s) of the signature, but, even I'm not able to find the correct way to encode it ...
1
vote
0answers
84 views

Installed Bitcoin-QT on windows2008r2 server, but it won't snyc anything at all

Installed Bitcoin-QT on windows2008r2 server, but it won't sync anything at all. No connections to network, no blocks, no movement full stop. I have OK'd it in windows firewall, tried connecting ...
1
vote
0answers
566 views

Cannot synchronize with Bitcoin in testnet mode

I downloaded Bitcoin-QT for Windows 7 into: MYUSERNAME/Downloads/bitcoin-0.8.6-win32/bitcoin-0.8.6-win32 I want to run Bitcoin in testnet mode, so I created bitcoin.conf with only the following ...
1
vote
0answers
168 views

Nonstandard script - TX rejected

I am experimenting in testnet with nonstandard scripts. There was a transaction, created by me, with the following vout script: OP_HASH256 ...
1
vote
0answers
315 views

bitcoin-qt compiles successfully but runs fail

I have compiled bitoin-qt, PTS coin and other alt-coins successfully, but they can't run concurrently. I use MinGW4.4, QT 4.8.5 downloaded from website and QT creator 2.8.1. This is my .pro setting: ...
1
vote
0answers
178 views

Old transactions remain unconfirmed after redownloading the blockchain

I received a runaway exception error then deleted everything but wallet.dat from the data directory and opened bitcoin-qt to redownload the blockchain. Transactions larger than 0.00016 btc remain ...
1
vote
0answers
2k views

Sent bitcoins to my unencrypted wallet and encrypted the wallet before file synced, is there any way i can get them back?

Thanks in advance for any light you can shed on my problem.. I think I sent bitcoins from an online wallet to my offline wallet BitcoinQT(0.81) in august. The transaction has been confirmed, but not ...
1
vote
0answers
37 views

Huge hdd load when creating keys

I've configured the -keypool=n parameter to create a lot of keys at once. During the generation, the hdd has a lot of IO, why?
1
vote
0answers
84 views

Bitcoin-Qt locks up

During Initial Sync BitCoin-QT to lock-up and cause Debian Wheezy to crash and reboot...no error message. How do I fix this issue? Subsequent execution of client software has same result.
1
vote
0answers
184 views

How to export an encrypted non-seedless electrum wallet into bitcoin-qt?

How to export an encrypted non-seedless electrum wallet into bitcoin-qt? Is it even possible? Cheers
1
vote
0answers
1k views

Bitcoin client fails and reports some database recovery error

I am looking for somebody to help me fix my Bitcoin client, it is corrupt, reads : "A fatal error occured. Bitcoin can no longer continue safely and will quit. EXCEPTION: 22DbRunRecoveryException ...
1
vote
0answers
459 views

Move all coins from an address via RPC

Let's say I generated some coins with a given address and I want to send a specific amount of coins to a specific addresses, and move the remaining balance to another specific address. I want to do it ...
1
vote
1answer
151 views

Why mining pool has different connections ports for different difficulty

In the documentation of mining pool I found following Connect Details: (Difficulty 5 - GPU) stratum+tcp://stratum.btcprivate.org:3032 (Difficulty 10 - GPU Farm) stratum+tcp://stratum....
1
vote
1answer
682 views

Where can i find proof of work in bitcoin core source code?

does anyone knows which part of the bitcoin core source code contains the proof of work for mining, creating of block and adding to blockchain? what are the files and functions involves? https://...

1
3 4
5
6 7
11